Small quick heater

A heater, fast technology, applied in the direction of air heaters, fluid heaters, lighting and heating equipment, etc., can solve problems such as difficult miniaturization, and achieve simple and reliable fixing methods, reduced replacement times, and high heat exchange efficiency Effect

Inactive Publication Date: 2014-08-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heating element of the fast heater is the heat exchange element, but in order to reduce the flow loss as much as possible and ensure the heat exchange area, the diameter of the heating tube should not be too small, and a certain length must be ensured, so it is difficult to realize miniaturization

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0020] The present embodiment is a kind of small fast heater.

[0021] refer to figure 1 , figure 2 , The fast heater in this embodiment is composed of a shell 1, an insulating stud 2, a heating net 3, an electrode 4, an insulating screw 5, an asbestos gasket 6, a flange 7, and an insulating layer 8, and a multilayer folded wire mesh is used as the Heating element.

[0022] The heating net 3 is tightened and fixed along the insulating studs 2 on both sides of the channel of the shell 1, and the heating net 3 forms a multi-layer M-shaped structure along the channel, and the heating net 3 is perpendicular to the flow direction of the fluid working medium; the shell 1 There are electrodes 4 at both ends to fasten the heating grid 3, and there are two electrodes 4 at both ends of the heating grid 3 to ensure the reliable power supply of the heating grid 3, and the power supply end of the electrodes 4 and the flange 7 are fastened on the shell 1 through insulating screws 5; Hav...

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PUM

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Abstract

The invention discloses a small quick heater which comprises a shell, insulating layers, insulating studs, a heating net, electrodes and asbestos gaskets, wherein the heating net is fixed on the insulating studs on the two sides of a channel of the shell in a tensioned mode to enable a multi-layer grid structure to be formed in the channel, the electrodes are arranged at the two ends of the shell respectively to fasten the heating net, the power supply ends of the electrodes and flanges are fastened to the shell through insulating screws, the insulating layers are arranged between the electrodes and the shell, the asbestos gaskets are arranged between the electrodes and the flanges, and the heating net is electrified and heated through the electrodes to achieve reliable power supply. According to the small quick heater, multi-layer folding wire mesh is adopted to serve as a heating element, the wire mesh is arranged perpendicular to the liquid flowing direction in a single-layer or multi-layer mode, and by means of the characteristics that the contact area between liquid and the heating element is large and heat exchange is strong, the efficiency of heat exchange between the liquid and the heating element is high. The heater is used for quick heating of liquid working media in a channel under the condition that non-conducting liquid is still or moves, and especially suitable for quick heating of liquid with small flow.

Description

technical field [0001] The present invention relates to a heater, in particular to a small fast electric heater for non-conductive fluid using multi-layer folded wire mesh as a heating element. Background technique [0002] Fluid heaters are widely used in industrial and scientific research fields to heat fluids. It is relatively difficult to achieve rapid heating with small flow rate and large temperature rise. According to the principle of heat transfer, there are three ways to achieve the effectiveness and rapidity of fluid heating: increase the heat exchange area between the heating element and the fluid, increase the heat exchange intensity between the heating element and the fluid, and increase the heat exchange temperature difference between the heating element and the fluid . Considering the safety and reliability of operation, increasing the heat transfer temperature difference is only applicable to individual cases, while increasing the heat transfer area and inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H3/04F24H9/18
Inventor 郭涛赵曙朱惠人
Owner NORTHWESTERN POLYTECHNICAL UNIV
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